I tried to disable all my sound drivers, but that didn't work either. I thought maybe a special quest chime played when opening these containers that was throwing an error and stopping the loot window pop up function from completing. I tried setting my sound quality to LOW, and setting all my volumes to 0. Nothing worked.
Here is a pic of the chest open, I know there is something in there because the tooltip doesn't say (Empty), but no loot window.
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https://imgur.com/MAnKh8V[/img]